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warnings.simplefilter('ignore')
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homebackup = os.tempnam(tempdir)
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warnings.resetwarnings()
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# Note: shutil.move does not behave like "mv" - it does not put a file
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# into a directory if it already exists, just fails. Therefore it is
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# not susceptible to tmpnam symlink attack.
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# Back up the /home directory, delete the entire jail, recreate the
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# jail directory tree, then copy the /home back
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# NOTE that shutil.move changed in Python 2.6, it now moves a
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# directory INTO the target (like `mv`), which it didn't use to do.
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# This code works regardless.
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shutil.move(homedir, homebackup)
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shutil.rmtree(userdir)
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shutil.move(homebackup, homedir)
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# Change the ownership of all the files to the right unixid
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logging.debug("chown %s's home directory files to uid %d"
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# Chmod to rwxr-xr-x (755)
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os.chmod(userhomedir, 0755)
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make_conf_py(user.login, userdir, user.svn_pass)
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make_ivle_conf(user.login, userdir, user.svn_pass)
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make_etc_passwd(user.login, userdir, ivle.conf.jail_system, user.unixid)
240
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return userhomedir
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def make_conf_py(username, user_jail_dir, svn_pass):
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def make_ivle_conf(username, user_jail_dir, svn_pass):
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Creates (overwriting any existing file, and creating directories) a
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file ${python_site_packages}/ivle/conf/conf.py in a given user's jail.
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file /etc/ivle/ivle.conf in a given user's jail.
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username: Username.
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user_jail_dir: User's jail dir, ie. ivle.conf.jail_base + username
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svn_pass: User's SVN password.
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conf_path = os.path.join(user_jail_dir,
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ivle.conf.python_site_packages[1:], "ivle/conf/conf.py")
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conf_path = os.path.join(user_jail_dir, "etc/ivle/ivle.conf")
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os.makedirs(os.path.dirname(conf_path))
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# In the "in-jail" version of conf, we don't need MOST of the details
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# (it would be a security risk to have them here).
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# So we just write root_dir, and jail_base is "/".
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# (jail_base being "/" means "jail-relative" paths are relative to "/"
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# when inside the jail.)
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# XXX: jail_base is wrong and shouldn't be here. Unfortunately, jail code
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# uses ivle.studpath.url_to_{local,jailpaths}, both of which use
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# jail_base. Note that they don't use the bits of the return value
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# that depend on jail_base, so it can be any string.
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conf_file = open(conf_path, "w")
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conf_file.write("""# IVLE jail configuration
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# In URL space, where in the site is IVLE located. (All URLs will be prefixed
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# eg. "/" or "/ivle".
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root_dir = %(root_dir)r
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# This value is not relevant inside the jail, but must remain for now. See
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# the XXX in ivle.makeuser.make_conf_py.
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# The hostname for serving publicly accessible pages
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public_host = %(public_host)r
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# The URL under which the Subversion repositories are located.
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svn_addr = %(svn_addr)r
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# The login name for the owner of the jail
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# The subversion-only password for the owner of the jail
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svn_pass = %(svn_pass)r
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""" % {'root_dir': ivle.conf.root_dir,
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'public_host': ivle.conf.public_host,
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'svn_addr': ivle.conf.svn_addr,
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'username': username,
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'svn_pass': svn_pass,
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# So we just write root_dir.
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conf_obj = ivle.config.Config(blank=True)
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conf_obj.filename = conf_path
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conf_obj['urls']['root'] = ivle.conf.root_dir
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conf_obj['urls']['public_host'] = ivle.conf.public_host
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conf_obj['urls']['svn_addr'] = ivle.conf.svn_addr
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conf_obj['user_info']['login'] = username
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conf_obj['user_info']['svn_pass'] = svn_pass
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# Make this file world-readable
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# (chmod 644 conf_path)